- #1
bugatti79
- 794
- 1
Hi Folks,
I got stuck towards the end where it ask to derive the unit normal (eqn 3.2.29 I don't know how they arrived at [tex]n_x[/tex]. I have looked at trig identities...and I have assumed the following
[tex]n_x=\frac{N_x}{|N_x|}[/tex]
I don't see the (r+p) term anywhere in neither the top nor bottom.
PS: I have posted this in MHB on Tues but no response.
http://mathhelpboards.com/calculus-10/unit-normal-epicycloid-16922.html
Thanks
I got stuck towards the end where it ask to derive the unit normal (eqn 3.2.29 I don't know how they arrived at [tex]n_x[/tex]. I have looked at trig identities...and I have assumed the following
[tex]n_x=\frac{N_x}{|N_x|}[/tex]
I don't see the (r+p) term anywhere in neither the top nor bottom.
PS: I have posted this in MHB on Tues but no response.
http://mathhelpboards.com/calculus-10/unit-normal-epicycloid-16922.html
Thanks